Juan Mata says you get a little bit of a "silly face" when you score, celebrate and then VAR rules it out.

Hah.

Full quotes to come.

Steve McClaren
Ex-England manager on BBC Radio 5 live

Huddersfield did as good as they possibly could have done.

But United did a job on them. They defended with their lives and Lindelof and Smalling were magnificent – they were the platform for this win.

Their front three tore Huddersfield apart. That’s how they win. They have quality on the field and on the bench.

Manchester United is a big club and there is huge pressure and responsibility when you wear that red shirt.

Dan Washbourne: Ultimately, Huddersfield's season won't be decided by losing a cup game to Man United, but if they can play like this against those relegation rivals in the next six games there's every chance they'll get a follow-up season in the Premiership.

Graham RB: Really enjoyed watching Huddersfield batter Man Utd in terms of possession and attacking intent. Shame the bus was working well today and Lukaku’s smash and grab.

Sons of Punjab: Not been a vintage Utd performance by any means but it has been a solid and professional one, got to give Utd credit for that tonight.

Steve McClaren
Ex-England manager on BBC Radio 5 live

It was strange to see Lukaku and Mourinho to have a father and son chat at half time.

Whatever was said, it has affected him as he got two great goals today.

Mourinho is always humble when he wins games - but when he loses he's straight down the tunnel.

A Romelu Lukaku double helps Manchester United into the quarter-finals.

Image source, Rex Features

This is a good sight for Manchester United players and supporters.

Defender Eric Bailly is making his first appearance since November because of an ankleinjury.

He gets a whole minute of action in place of Romelu Lukaku.

THREE minutes added on.

Alistair Yeomans
BBC Radio 5 live at Huddersfield

This has been a good Cup tie. Huddersfield would have loved to have won it but, talking to a number of their fans, their Premier League game next week is crucial.

As for a clinical Man Utd, will anyone - heart of hearts - want to meet them in the quarters. They look good.

Huddersfied continue to search for that elusive goal.

Tommy Smith with a lovely shaped cross into the box but Chris Smalling meets it to clear.

Midfielder Danny Williams then picks out Steve Mounie in the box, but the French striker's acrobatic effort goes wide.

Into the final minute.

Image source, Getty Images

Mark Ojuok: McTominay...future Carrick.

Death Ape Disco: Carrick in, cohesive United team. McTominay's done well as well, physical, hard-working. Carrick STILL not replaced. Not replaceable?

Steve McClaren
Ex-England manager on BBC Radio 5 live

Why didn't Billing shoot first time there?

That's the difference in quality that we have seen between the two teams tonight.

Huddersfield still looking to work an opening from the edge of the box, but Philip Billing's pass through runs straight to goalkeeper Sergio Romero.

What an entrance this could have been.

Abdelhamid Sabiri trots into the penalty area and meets a corner, but nods over from six yards with his first touch on the ball.

Image source, AFP

A last change for Huddersfield.

Abdelhamid Sabiri on for Rajiv van La Parra.

A reminder that the draw for the next round is coming up after this game so stay tuned.

Misterged: All the talk of United’s DNA being corrupted by Mourinho... Sir Alex knew how to get results pretty or not. This season started with plenty of entertainment.

Henock Belete Asfaw: This doesn’t change the fact that Man United are in top four fight.

Shuga: Is Sanchez the player to unlock Lukaku's goal scoring abilities?

Another sub for the away side.

Jesse Lingard on for Juan Mata.

Into the last 10 minutes.

That second goal from Romelu Lukaku definitely took the sting out of the game.

Huddersfield's game looks run.

Image source, Getty Images

Steve McClaren
Ex-England manager on BBC Radio 5 live

Huddersfield look demoralised. They are out of ideas.

United have worn them down after Huddersfield threw their best at them.

As soon as United get the ball, they are off and they defend with seven.

Image source, Getty Images

Thomas: Another perfect smash and grab job by United masterminded by Jose the master tactician. The players are doing what he is asking of them, it maybe boring but they are still in the cup.